2011 Lexus HS 250h Owners Manual - Page 110

1-8. Safety information l The SRS front passenger airbag will not activate if there is no passenger sitting in the front passenger seat. However, the SRS front passenger airbag may deploy if luggage is put in the seat, or the seat belt is fastened, even if the seat is unoccupied. (→P. 74) n Operating conditions (SRS side airbags and curtain shield airbags) The SRS side airbags and SRS curtain shield airbags will deploy in the event of an impact that exceeds the set threshold level (the level of force corresponding to the impact force produced by an approximately 3307 lb. [1500 kg] vehicle colliding with the vehicle cabin from a direction perpendicular to the vehicle orientation at an approximate speed of 12 -18 mph [20 -30 km/h]). n Conditions under which the SRS airbags may deploy (inflate), other than a colli- sion The SRS front airbags may also deploy if a serious impact occurs to the underside of your vehicle. Some examples are shown in the illustration. l Hitting a curb, edge of pavement or hard surface l Falling into or jumping over a deep hole l Landing hard or falling n Types of collisions that may not deploy the SRS airbags (SRS front airbags) The SRS front airbags are generally not designed to inflate if the vehicle is involved in a side or rear collision, if it rolls over, or if it is involved in a low-speed frontal collision. But, whenever a collision of any type causes sufficient forward deceleration of the vehicle, deployment of the SRS front airbags may occur. l Collision from the side l Collision from the rear l Vehicle rollover 110